cc/gcc: avoid passing --enable-multilib

Some versions of gcc have a broken --enable-multilib flag. As multilib is the
default, only pass the --disable-multilib flag

Signed-off-by: Cody P Schafer <dev@codyps.com>
[yann.morin.1998@free.fr: make it an if-block; duplicate commit log as comment]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <5c970c1ceb22528fe28a.1399687923@localhost>
Patchwork-Id: 347585

 #!/bin/sh

 # Needed for systems without gettext

 $* -xc -o /dev/null - > /dev/null 2>&1 << EOF

 #include <libintl.h>

 int main()

 {

 	gettext("");

 	return 0;

 }

 EOF

 if [ ! "$?" -eq "0"  ]; then

 	echo -DKBUILD_NO_NLS;

 fi